Do you have an updated chart? What about one with a breakdown of which O/S is dominant on x86 platforms? As I said before, in 2000 I also thought Sun would continue to dominate the market for a very long time. They haven't. Why? Blaming it on the various Linux/BSD packages being free sounds good in a sound-bite but there are much deeper reasons for it.
For the worse, which was my whole point, why else would I have shown it? There's hundreds of foreign clones of Unix out there now, since free linux now contains some of the best features of US Unix. Except we don't get paid like we used to, nor can we control the flow of technology since they aren't branded as US property anymore once they leave our shores and are renamed by foreign governments. Check the link I provided above, hundreds of versions out there now, Chinese Red Flag, Asianux, Thailand Linux, Malaysian Linux, my prediction before much longer: EUnix. Unfortunately, some will love it.
Do you have an updated chart? What about one with a breakdown of which O/S is dominant on x86 platforms?
There are none that I know of for *nix because there is no way to know anymore. The copying is rampant, and no known way to measure, except estimates by Dataquest and IDC, and those aren't free to post. As for currently dominant on x86, easily Microsoft, look at the charts from the parent article that show 60% of all servers sales including *nix, and over 90% of all desktops. Of course you'll notice the freeware crowd has their sites set on Microsoft next, once they finish their piliage of Unix. Thankfully, it may be some time away, allowing us the chance to adapt our laws and overcome the dangers, based on warnings such as mine.